Oral irrigator or water flosser



FIG. 1 is a top, front and left side perspective view of an oral irrigator or water flosser showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a bottom, rear and left side perspective view thereof.

The evenly-broken lines where present illustrate portions of the oral irrigator or water flosser that form no part of the claimed design. 

CLAIM The ornamental design for a oral irrigator or water flosser, as shown and described. 